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Date: Mon, 12 Mar 2012 15:04:43 -0600
From: Stephen Warren <swarren@wwwdotorg.org>
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To: Linus Walleij <linus.walleij@stericsson.com>
CC: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        Shawn Guo <shawn.guo@freescale.com>,
        Thomas Abraham <thomas.abraham@linaro.org>,
        Dong Aisheng <dong.aisheng@linaro.org>,
        Rajendra Nayak <rajendra.nayak@linaro.org>,
        Haojian Zhuang <haojian.zhuang@marvell.com>,
        Linus Walleij <linus.walleij@linaro.org>
Subject: Re: [PATCH] pinctrl: fix error path in pinconf_map_to_setting()
References: <1331584870-10077-1-git-send-email-linus.walleij@stericsson.com>
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On 03/12/2012 02:41 PM, Linus Walleij wrote:
> From: Linus Walleij <linus.walleij@linaro.org>
> 
> The code was using the union member
> setting->data.configs.group_or_pin to store a potential
> error code, but since that member is unsigned the
> < 0 comparison was not true, letting errors pass thru,

"thru" is a pet peeve of mine; it'd be great to spell this correctly as
"through".

> ending up as mapped to pin "-22". Fix this up and print
> the error.

Oops. Sorry about that.

> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
...
> -		setting->data.configs.group_or_pin =
> -			pin_get_from_name(pctldev,
> -					  map->data.configs.group_or_pin);
> -		if (setting->data.configs.group_or_pin < 0)
> -			return setting->data.configs.group_or_pin;
> +		ret = pin_get_from_name(pctldev,
> +					map->data.configs.group_or_pin);
> +		if (ret < 0) {

"ret" here is named "pin" other places pin_get_from_name() is called,
and that naming seems to make a bit more sense here too.

Otherwise,
Acked-by: Stephen Warren <swarren@wwwdotorg.org>